There is a recent American online school called www.english-classonline.com where you can have effective lessons with a qualified and patient teacher.
They use a virtual whiteboard to teach online, it's very interesting. Their Conversational courses start at $7 an hour but they also offer Professional courses.
You should definitely check it out!_________________Hello English learners!
If you want to improve your Conversational and Professional English skills, join me on Skype, my ID is Rita4class and you will get a free trial class